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发明名称
Segmental grinding wheel
摘要
申请公布号
US1870449(A)
申请公布日期
1932.08.09
申请号
US19300449476
申请日期
1930.05.03
申请人
NORTON COMPANY
发明人
GREENWOOD WALLACE W.
分类号
B24D5/06
主分类号
B24D5/06
代理机构
代理人
主权项
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